Title

Outgoing secure channel traffic must be encrypted or signed. (Cat II impact)

Discussion

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted and signed.

Check Content

Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.) Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for "Domain Member: Digitally encrypt or sign secure channel data (always)" is not set to "Enabled", this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: RequireSignOrSeal Value Type: REG_DWORD Value: 1

Fix Text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Domain Member: Digitally encrypt or sign secure channel data (always)" to "Enabled".

Additional Identifiers

Rule ID: SV-48131r1_rule

Vulnerability ID: V-6831

Group Title: Encrypting and Signing of Secure Channel Traffic

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.